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Duo and International Travel


If you travel internationally or will be abroad for a semester, don’t worry – Duo authentication can work without cellular service or a wifi connection.

Users have several options that may be useful:

  • Smartphone/Tablet – Even with cellular service disabled or without a wifi connection, you may use the Duo Mobile app to generate a passcode that you can use to authenticate. Simply choose the Enter a Passcode option when you get the Duo authentication prompt. To generate the passcode, open the Duo Mobile app on your phone and tap the down arrow symbol ∨ next to "Hamilton College".
  • Hardware token – if you do not have a smartphone/tablet and you travel internationally, you may want to get a Duo hardware token (contact the Help Desk to start the process). Simply choose the Enter a Passcode option when you get the Duo authentication prompt and then enter the passcode that shows on the Duo hardware token.
  • ByPass Code – If you will not have a smartphone/tablet and a Duo hardware token is not an option, it is possible to get a bypass code that you can use for Duo authentication for the duration of your trip. Contact the Service Desk to request this option. Then, simply choose the Enter a Passcode option when you get the Duo authentication prompt and enter the bypass code that you were given.
  • Normal options – If you have cellular service or a wifi connection, then you can simply use whatever authentication technique you normally use. The push, passcode, and phone options all work overseas. You can even add an international phone number as one of your authentication options.

If you ever have any questions, please reach out to the LITS Help Desk at 315-859-4181 or helpdesk@hamilton.edu.

Last updated: August 13, 2021

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